Zygomatic Implant Drill Guide for Ocular Safety
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Solution Overview
Problem
During zygomatic implant procedures, dental surgeons face challenges in accurately guiding zygomatic drills due to the proximity of the zygomatic bone target site to sensitive ocular structures, leading to potential injuries and vision issues, as they cannot visually confirm the drill's precise location and angle without additional surgical exposure.
Innovation Solution
A guiding apparatus for zygomatic implant dental drills, featuring a collar and offset post with extensions that allow the user to observe the drill's position externally, enabling precise alignment and angle adjustment without additional surgical intrusion, and accommodating different handpiece configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the zygomatic drill is used to reach the zygomatic bone through the maxilla, then the implant can be anchored in the zygomatic bone to support the implant and forces, but the drill may deviate from the target site and intrude into the ocular cavity causing injury
Solution Approach 1:
The patent introduces a guide apparatus as an intermediary between the dental surgeon and the zygomatic drill. The guide includes a guide body with a guide bore that defines the drill's trajectory, and a position indicator that visually marks the guide's location relative to the ocular cavity. This intermediary structure ensures the drill remains on the correct path without requiring the surgeon to directly visualize the target site through soft tissue and maxillary sinus.
Solution Approach 2:
The guide apparatus provides visual feedback through position indicators that show the surgeon the spatial relationship between the guide, the drill, and the ocular cavity. The second position indicator on the guide body and the fourth position indicator on the drill handle create a visual reference system that allows the surgeon to monitor drill position and adjust as needed, preventing intrusion into the ocular cavity.
2Ease of operation
If the dental surgeon cannot see the target site due to soft tissue and maxillary sinus obstruction, then the drill angle must be estimated, but estimation leads to angle deviation and drill mispositioning
Solution Approach 1:
The guide apparatus serves as a mechanical intermediary that translates the desired drill angle into a physically constrained trajectory. The guide bore mechanically enforces the correct angle, eliminating the need for visual estimation. The guide's position indicators provide visual feedback about the guide's orientation, allowing the surgeon to verify the angle without seeing the target site directly.
Solution Approach 2:
The guide apparatus is positioned and secured before the drilling operation begins. The guide's position indicators are established in advance to show the correct spatial relationship. This preliminary setup ensures that when drilling commences, the drill angle is already predetermined and constrained by the guide structure, eliminating the need for real-time angle estimation.
3Length of moving object
If the zygomatic drill is made very long to reach the zygomatic bone from the maxillary entry site, then the implant can be anchored at the required distance, but any slight deviation in drill angle results in considerable deviation from the target site
Solution Approach 1:
The guide apparatus acts as a mechanical intermediary that constrains the long drill to a precise trajectory. The guide bore physically limits the drill's movement to the correct angle and path, preventing amplification of angular deviations over the long drill length. The guide's position indicators provide visual reference to maintain this precision throughout the drilling operation.
Data Source
AI summary
An apparatus for guiding a zygomatic implant dental drill installed in a dental handpiece includes a collar configured to seat on a neck portion of the dental handpiece, with an offset post extending from the collar. A first extension extends from the offset post parallel to the neck portion, and a second extension extends from the first extension. The second extension is oriented parallel to the zygomatic implant dental drill, extending from the first extension to be co-terminal and off-set from the zygomatic implant dental drill. By observing the travel of the second extension along a patient's face, a dental surgeon can guide the zygomatic implant dental drill inside the patient toward the patient's zygomatic bone.